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Statement I: An emf is induced ina long ...

Statement I: An emf is induced ina long solenoid by a bar magnet that moves while totally inside the solenoid along axis of the solenoid.
Statement II: as the magnet moves inside the solenoid the flux through turns of the solenoid changes.

A

(a) Statement I is True, Staatement II is True, Statement II is correct expaination for Statement I.

B

(b) Statement I is True, Staatement II is True, Statement II is NOT a correct expaination for Statement I.

C

( c) statement I is True, Satement II is false.

D

( d) statement I is False, Satement II is True.

Text Solution

Verified by Experts

The correct Answer is:
D
(d) Even though flux through individual lines changes, it remains unchanged for the solenoid as a whole. Therefore, no e.m.f. is induced in the long solenoid.
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Knowledge Check

  • Asseration: An emf is induced in a along solenoid by a bar magnet that moves while totally inside it along the solenoid axis. Reason: As the magnet moves inside the solenoid the flux through individual turns of the solenoid changes.

    A
    If both asseration and reason are true and reason is the correct explanation of assertion.
    B
    If both asseration and reason are true but reason is not the correct explanation of assertion.
    C
    If assertion is true but reason is false.
    D
    If assertion is false but reason is true.

  • The magnetic field inside a solenoid is

    A
    directly prportional to its length
    B
    inversely prportional to the total numbers of turn
    C
    inversely proportional to the current
    D
    directly proportional to the current

  • The magnetic field inside a solenoid is-

    A
    infinte
    B
    zero
    C
    uniform
    D
    non-uniform

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